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100 changes: 100 additions & 0 deletions
100
packages/beacon-node/src/chain/blocks/verifyBlocksSanityChecks.ts
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,100 @@ | ||
| import {computeStartSlotAtEpoch} from "@lodestar/state-transition"; | ||
| import {IChainForkConfig} from "@lodestar/config"; | ||
| import {IForkChoice} from "@lodestar/fork-choice"; | ||
| import {allForks, Slot} from "@lodestar/types"; | ||
| import {toHexString} from "@lodestar/utils"; | ||
| import {IBeaconClock} from "../clock/interface.js"; | ||
| import {BlockError, BlockErrorCode} from "../errors/index.js"; | ||
| import {ImportBlockOpts} from "./types.js"; | ||
|
|
||
| /** | ||
| * Verifies some early cheap sanity checks on the block before running the full state transition. | ||
| * | ||
| * - Parent is known to the fork-choice | ||
| * - Check skipped slots limit | ||
| * - check_block_relevancy() | ||
| * - Block not in the future | ||
| * - Not genesis block | ||
| * - Block's slot is < Infinity | ||
| * - Not finalized slot | ||
| * - Not already known | ||
| */ | ||
| export function verifyBlocksSanityChecks( | ||
| chain: {forkChoice: IForkChoice; clock: IBeaconClock; config: IChainForkConfig}, | ||
| blocks: allForks.SignedBeaconBlock[], | ||
| opts: ImportBlockOpts | ||
| ): {relevantBlocks: allForks.SignedBeaconBlock[]; parentSlots: Slot[]} { | ||
| if (blocks.length === 0) { | ||
| throw Error("Empty partiallyVerifiedBlocks"); | ||
| } | ||
|
|
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| const relevantBlocks: allForks.SignedBeaconBlock[] = []; | ||
| const parentSlots: Slot[] = []; | ||
|
|
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| for (let i = 0; i < blocks.length; i++) { | ||
| const block = blocks[i]; | ||
| const blockSlot = block.message.slot; | ||
|
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| // Not genesis block | ||
| // IGNORE if `partiallyVerifiedBlock.ignoreIfKnown` | ||
| if (blockSlot === 0) { | ||
| if (opts.ignoreIfKnown) { | ||
| continue; | ||
| } else { | ||
| throw new BlockError(block, {code: BlockErrorCode.GENESIS_BLOCK}); | ||
| } | ||
| } | ||
|
|
||
| // Not finalized slot | ||
| // IGNORE if `partiallyVerifiedBlock.ignoreIfFinalized` | ||
| const finalizedSlot = computeStartSlotAtEpoch(chain.forkChoice.getFinalizedCheckpoint().epoch); | ||
| if (blockSlot <= finalizedSlot) { | ||
| if (opts.ignoreIfFinalized) { | ||
| continue; | ||
| } else { | ||
| throw new BlockError(block, {code: BlockErrorCode.WOULD_REVERT_FINALIZED_SLOT, blockSlot, finalizedSlot}); | ||
| } | ||
| } | ||
|
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| let parentBlockSlot: Slot; | ||
|
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| // When importing a block segment, only the first NON-IGNORED block must be known to the fork-choice. | ||
| if (relevantBlocks.length > 0) { | ||
| parentBlockSlot = relevantBlocks[relevantBlocks.length - 1].message.slot; | ||
| } else { | ||
| // Parent is known to the fork-choice | ||
| const parentRoot = toHexString(block.message.parentRoot); | ||
| const parentBlock = chain.forkChoice.getBlockHex(parentRoot); | ||
| if (!parentBlock) { | ||
| throw new BlockError(block, {code: BlockErrorCode.PARENT_UNKNOWN, parentRoot}); | ||
| } else { | ||
| parentBlockSlot = parentBlock.slot; | ||
| } | ||
| } | ||
|
|
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| // Block not in the future, also checks for infinity | ||
| const currentSlot = chain.clock.currentSlot; | ||
| if (blockSlot > currentSlot) { | ||
| throw new BlockError(block, {code: BlockErrorCode.FUTURE_SLOT, blockSlot, currentSlot}); | ||
| } | ||
|
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| // Not already known | ||
| // IGNORE if `partiallyVerifiedBlock.ignoreIfKnown` | ||
| const blockHash = toHexString( | ||
| chain.config.getForkTypes(block.message.slot).BeaconBlock.hashTreeRoot(block.message) | ||
| ); | ||
| if (chain.forkChoice.hasBlockHex(blockHash)) { | ||
| if (opts.ignoreIfKnown) { | ||
| continue; | ||
| } else { | ||
| throw new BlockError(block, {code: BlockErrorCode.ALREADY_KNOWN, root: blockHash}); | ||
| } | ||
| } | ||
|
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| // Block is relevant | ||
| relevantBlocks.push(block); | ||
| parentSlots.push(parentBlockSlot); | ||
| } | ||
|
|
||
| return {relevantBlocks, parentSlots}; | ||
| } |
58 changes: 0 additions & 58 deletions
58
packages/beacon-node/test/unit/chain/blocks/verifyBlock.test.ts
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